With 7 volts in, just as Paul said the headroom to the 7805 is limited.
You could replace the 7805 with low dropout regulator such as an LM2937(5v). It's a pin for pin replacement.
Your headroom increases from ov to 1.5v in your example.
Bill H
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Low dropout regulator
With 7 volts in, just as Paul said the headroom to the 7805 is limited.
You could replace the 7805 with low dropout regulator such as an LM2937(5v). It's a pin for pin replacement.
Your headroom increases from ov to 1.5v in your example.
Bill H
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